Method and apparatus for lining receptacles



F. J. MAcDONALD. METHOD AND APPARATUS FOR LINING RECEPTACLES.

APPLICATION FILED JUNE 8, 192!- Patented Dec. 13, 1921 M I Hi ly.

I I h In UNITED STTE till FR J. MACDONALD, OF AKRON, OHIO, ASSIGNOR TO THE B. F. GOODRICH COMPANY, OF NEW YORK, N. Y.,

A CORPORATION 0F NEW Y0 .1

naoagrso.

Application filed. June 6, 19211.

To all whom it may concern:

Be it known that I, FRANK J. MACDONALD, a citizen of the United States, residin at Akron, in the county. of Summit and tate of Ohio, have invented a certain new and useful Method and Apparatus for Lining Receptacles, of which the following is a specification.

This invention relates to the art of lining hollow objects orreceptacles, and especially metal receptacles, with a plastic material. As herei'n illustrated, my invention is adapted to compress a lining of uncured hard-rubber compound upon the walls of a forammous bowl such as is used for spinning artificial silk. It is desirable that high and substantially equal pressure he applied to all parts of the rubber lining to cause it to conform and adhere firmly to the bowl and interlock with the recesses or apertures therein. Heretofore, so far as l am aware, this work has been done by hand, the lining being pressed in with a hand roller.

The object of my invention is to save time and labor in performing this work and to obtain a better product.

Of the accompanying drawings:

Figure 1 is a plan view of a preferred embodiment of my invention.

Fig. 2 is a side view partly in section on line 2-2 of Fig. 1 and with parts broken away.

Fig. 3 is a the device. 7

Fig. t is a perspective view of a spinning bowl, before application of the lining.

Fig. 5 is a section of a part of the finished product.

Referring to the drawings:

The apparatus comprises a base plate 10 upon which is mounted an upright cylindrical wooden block or form 11 formed with an axial aperture 11 in extension of an aperture 12 through said base plate. 13 is an air or steam supply pipe threaded into said aperture 12. p

A hat-shaped, elastic bag or diaphragm 14 formed preferably of an outer ply of rubberized fabric 15 and an inner ply 16 of rubber (Fig. 3), the closed end of said bag containing an embedded metal reinforcing plate 17 and the margin of said bag being formed with bolt holes 18, 18, is inverted over the block 11 and its brim-like margin perspective view of a part of is scaled down to the base plate 10 by a Specification of Letters Patent.

Patented Dec. 13, 1921.

Serial No. 476,035.

clamping ring 19. The warp and weft of the fabric 15 preferably run obliquely on the s1de walls of the bag, as shown, in order that it may be more easily elongated or expanded laterally.

20 is an annular plate resting upon the clamping ring 19, and 21 is an upwardly flared, metal, collar-like guard mounted upon the annular plate 20 and surrounding the work at a distance therefrom.-

22 is a metallic spinning bowl of goblet shape formed with a hollow stem and in this instance with a plurality of apertures, 23, 23, through its walls, causing said walls to present an uneven or broken surface. (Fig. 2) is a lining of uncured rubber compound in position in said bowl and folded over the rim thereof as shown at 25, 25, the bowl being inverted over the bag 14 and resting upon the annular plate 20.

A flat annulus of wood 26 loosely surrounds the stem of the inverted bowl and rests upon the shoulder thereof. 27 is a downwardly flared. annular, metal guard secured to the wooden annulus 26 by screws 272,27, its lower edge approximately meeting the upper edge of the guard 21. 28 is a handle for the guard 27 and wooden annulus 26.

A hand operated cross-head 29 is provided for holding the inverted bowl a ainst the plate 20, said cross-head being formed of two generally parallel bars converging and secured together near one end, at 30, their opposite ends being hinged at 31 to a block 32, slidably mounted on the reduced upper end of a standard 33 mounted upon the base plate 10.

34 is a compression spring upon said reduced upper end of the standard 33, adapted to press the block 32 upward to prevent cramping of the cross-head against the an nulus 26 as it is closed upon the latter, and 35, 35 are adjustment nuts threaded upon said reduced end and adapted to force the block 32 downward against the spring 34 to .adapt the apparatus for different sized bowls. 36 is a standard similar to standard 33, provided with a slidable, rectangular retaining block 37 adapted to clamp down the cross-head 29 under action of a nut 38 threaded upon the reduced upper end of standard 36, or, upon the releasing of said nut, to be turned lengthwise of the crosshead 29 to permit the bars of the latter to clear said block and be lifted past a. The bars constituting the cross-head 29 are curved outward around the stem of the inverted bowl 34 and thus are adapted to bear upon 5 the wooden annulus 26.

In the operation of the device the rubber stock which is to constitute the lining of the bowl is placed in the latter by hand and pressed against its walls sufliciently to retain it therein, and is folded over the bowls rim The wooden annulus 26 and retained .therein, is then inverted over the bag 14 and allowed to rest upon the annular plate 20, within the guard 21. The crosshead 29 is then turned back, upon its hinge 31, until it rests upon the annulus 26, and is clamped in that position by means of' the block 37 and nut 38. Compressed air or steam is then admitted to the interior of the bag 14 through the pi e 13 and the hole 11 in the block 11, expanding the bag 14 a ainstthe lining 24, pressing the latter flrmly against its walls with substantially equal pressure at allpoints, compacting said lining and causing it to adhere to the walls of the bowl and to enter the perforations 23 therein, and thus interlocking it with the metal bowl. In order to avoid the forming of dimples in a the inner face of the linin due to the flow of 0 ing and the subsequent vulcanlzing opera-v After vulcanization small holes are rubber into the perforations, plugs 24 of rubber stock may be inserted into said perforations from the outside of the bowl, to coalesce with the lining stock during the presstion. bored through the rubber which fills the perforations 23. In Fig. 5 the lining and one of the plugs are shown as having consolil5 dated, and the holebored therethrough is shown at 23.

The reinforcing plate 17 prevents the bag 14 from unduly swelling out into the hollow stem of the bowl. The internal diameter of I no the annular plate 20 being somewhat larger than the bag 14, the latter is permitted to bulge out adjacent said plate and thus slightly round the corner of the lining 24 at that point. The relatively large internal di- Mi ameter of the plate 20 also facilitates the removal of the plate past the bag 22. The

guards 21, 27 prevent injury to the operator 1n case the bowl is exploded by the internal fluid pressure. The block 11 prevents the to bag 22 from collapsing between operations,

holds it in suitable shape for the placing of the bowl over it,-and insures a direct application of each part of the bag to the adjacent part of the lining.

5 Various modifications may be resorted to without departure from the scope of my invention, and I do not wholly limit my apparatus claims to the specific construction shown. The process may also be carried out in various ways although preferably performed with-a device having substantially the features herein described.

I claim:

1. The method of lining a hollowstructure with a plastic material which comprises placing a sheet of said material within the structure, pressing it lightly a ainst the wall of the latter to cause it to a here thereto, and applying fluid pressure to said plastic materla v2. The method of lining a hollow structure with a plastic material which comprises placing a sheet of said material within the structure, and distendin a flexible member against said materia by fluid pressure to compress it against the wall of said structure.

3. The herein-described method which comprises applying a plastic lining "to a rigid structure having a broken surface, and forcing it by fluid pressure into interlocked engagement .with said surface.

4. The method of lining a hollow, foraminous, metal structure which comprises applyinga-plastic lining to said structure, and forcing said lini'n outwardly into interlocked engagement t 'erewith by means of internal-flu1d pressure.

5. The method of making rubberlined structures which comprises applying a lining of hard-rubber compound to av foraminous metal bowl, and forcing said. lining outwardly into interlocked en a ement wtith said bowl by means of interna uid pressure.

6. The method of lining foraminous metal bowls which comprises ap 'lying a plastic lining to thebowl placing t e latter over an expansible bag havin substantiall the sha e of the interior 0 said bowl, in a'ting sai bag, and thereby forcing the lining outwardly mto. interlocked engagement with the bowl.

7. The method of lining a perforate struc-' ture with plastic material which comprises inserting plugs of said material into the perforations of said structure, placing a sieet of said material within the structure, and compressing said sheet of material against the wall of said structure by fluid pressure.

8. The method of making a rubber lined spinning bowl which comprises plugging the perforation of said bowl with a ru ber compound, placing a sheet of rubber compound within said bowl, pressinisaid sheet against the wall of said; bowl y fluid pressure, sub'ectin said bowl to vulcanizing heat, an drilling hole through the vulcanized rubber compound within its perforations.

9. A devlce for-pressin a lining in a vessel comprising a form avin'g substantially the shape of the interior of the vessel and adapted freely to receive the vessel thereover, and a bag adapted to be expanded from said form against said lining.

10. A device for pressing a lining in an open-ended vessel comprising a base, means for holding the vessel in inverted position upon said base, and means for supplying fluid under pressure to the interior of said vessel.

11. A device for pressing a lining in an open-ended vessel comprising a base, a bag having its mouth sealed to said base and adapted freely to receive the vessel thereover, means for holding an inverted vessel upon said base over said bag, and means for distendin said bag.

12. A evice for ressing a lining in a vessel comprising a base, a bag having its margin sealed to said base, means for holding an inverted vessel upon said base over said bag, means for distending said bag, and a shield adapted to surround said vessel. 13. A device for pressing a lining in a vessel comprising a base, a removable annulus for holdin an inverted vessel upon said base, means %or applying fluid pressure to the interior of said vessel, and a shield secured to said annulus.

14. A device for pressing alinin in a vessel comprising a base, a bag having its margin sealed to said base, an annular member adapted to encircle said bag and rest upon said base, a shield secured thereto, an annular member adapted to rest upon an inverted vessel to hold the same upon said base, a shield secured to the last said annular member, and means for distending said bag.

15. A device for pressing a lining into a spinnin bowl comprising a base, a form mounted on said base, a bag mounted upon said form and secured at its margin to said base, an annulus adapted to rest upon a vessel inverted over said form, a shield secured to said annulus, a cross-head adapted to bear upon said annulus, and means for introducing fluid pressure to the interior of said bag.

16. A device for pressing a lining in a vessel comprising a flexible, substantially hat-shaped, elastic bag adapted to be inflated against said lining, said bag having stifiening reinforcement in the top wall thereof adapted to prevent the deformation of said Wall of the bag.

17; A device for pressing a lining in an open-ended vessel comprising a base, an inflatable bag mounted on said base, and means for holding an inverted vessel upon said base over said bag, said means comprising an adjustable block, and a lever pivoted to said block.

18. A device for pressing a lining in a vessel formed with a recess from its main cavity comprising a bag adapted to be dis- FRANK J. MACDONALD. 

